Garcia fought for the first time since losing the WBC title in a unification fight with Thurman in March. Rios was able to get back on his feet, but staggered toward referee Kenny Bayless, who waved off the fight at the 2:25 mark of the round.

Garcia, from Philadelphia, was the world champion for six years dating to his win over Hall of Famer Erik Morales in 2012 through the March loss. Rios, from Oxnard, California, is a former lightweight champion.

David Benavidez (20-0, 17 KOs) defended his WBC super middleweight title for the first time in a 12-round unanimous decision over Ronald Gavril (18-3, 14 KOs). The judges scored it 120-108, 120-108 and 119-109. The fight was a rematch of last September's bout in which Benavidez won the world title.

Benavidez, from Phoenix, landed 315 punches to Gavril's 176 and connected on 41 percent of his power shots.

"I knew he was going to come out aggressive," Benavidez said. "I knew I could jab and box him all day. When I saw the opening I took it. I didn't knock him out though. He's a tough son of a gun."